Per the referenced article, there have been several drafts without any HOF players.
Near as I can tell, drafts that produced no HOF players include 1968, 1974, 1979, 1980, 1983, 1986, 1991, 1993 and 1994. Not sure when this was written, so there may be more who subsequently got to Cooperstown from the 80s and 90s drafts.
I'm pretty sure that it only includes the draft from which a player actually signed a contract, so a college player who gets drafted out of high school but chooses instead goes to play college ball is counted only when he's drafted the second time and signs.
https://baseballhall.org/discover-more/stories/baseball-history/caught-in-the-draft